Issue #19786 has been updated by nagachika (Tomoyuki Chikanaga). Backport changed from 3.0: DONTNEED, 3.1: DONTNEED, 3.2: REQUIRED to 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONE ruby_3_2 19a3466a1460924058ca16a259601bb753293d43 merged revision(s) cada537040743cbe49aac6740816d648ca0d3fb. ---------------------------------------- Bug #19786: Data::define() does not work as documented https://bugs.ruby-lang.org/issues/19786#change-104005 * Author: thyresias (Thierry Lambert) * Status: Closed * Priority: Normal * ruby -v: ruby 3.2.2 (2023-03-30 revision e51014f9c0) [x64-mingw-ucrt] * Backport: 3.0: DONTNEED, 3.1: DONTNEED, 3.2: DONE ---------------------------------------- Not sure if this is a bug or a feature. RDoc documentation for Data::define:
define(name, *symbols) → class define(*symbols) → class
Defines a new Data class. If the first argument is a string, the class is stored in Data::<name> constant.
```ruby M1 = Data.define('Measure', :amount, :unit) p M1 #=> M1 p M1.members #=> [:Measure, :amount, :unit] S1 = Struct.new('Measure', :amount, :unit) p S1 #=> Struct::Measure p S1.members #=> [:amount, :unit] ``` Unlike `Struct.new`, `Data.define` does not accept a name as first argument: it converts it to a symbol, and therefore a member. There is no trace of `Data::Measure` in the example above, while we do have `Struct::Measure`. -- https://bugs.ruby-lang.org/